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pkofman

737ng basic ils question efis and nav disagree

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A couple of simple questionsJust wondered what you all use for normal procedures on the 737 800/900assume flight plan ( star and sid entered) in the fms1. at times i get a message says , efis and nav freq disagree. Does this mean , the tuned freq on nav 1 and the freq on the current leg of the fms ( even if lnav ) is disengaged.2.On approach I normally tune the ils on Nav 1 and the inital fix to vor 2 . but there is no course selector for nav 2,unless i missed it. I read a tutorial that says you should put the ils freq into both nav's but that is not completely realistic either.Peter Kofmanpkofman@rogers.com

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>1. at times i get a message says , efis and nav freq disagree.>Does this mean , the tuned freq on nav 1 and the freq on the>current leg of the fms ( even if lnav ) is disengaged.This happens if you tune in a VOR but the EFIS selector is on APP or the other way around if you tune an ILS and the EFIS selector is on VOR.See the manual chapter 7 page 59.>2.On approach I normally tune the ils on Nav 1 and the>inital fix to vor 2 . but there is no course selector for nav>2,unless i missed it. I read a tutorial that says you should>put the ils freq into both nav's but that is not completely>realistic either.Tuning both NAV receivers to the ILS is indeed realistic should you have to do an autoland.You're right there's no course selector for NAV2. But why would you want one? With all the fancy FMC equipment you have many other means of following/intercepting radials, FIX page and course intercept on the LEGS page come to mind.Regards,Markus


Markus Burkhard

 

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>>1. at times i get a message says , efis and nav freq>disagree.>>Does this mean , the tuned freq on nav 1 and the freq on the>>current leg of the fms ( even if lnav ) is disengaged.>>This happens if you tune in a VOR but the EFIS selector is on>APP or the other way around if you tune an ILS and the EFIS>selector is on VOR.>See the manual chapter 7 page 59.>>>>2.On approach I normally tune the ils on Nav 1 and the>>inital fix to vor 2 . but there is no course selector for>nav>>2,unless i missed it. I read a tutorial that says you should>>put the ils freq into both nav's but that is not completely>>realistic either.>>Tuning both NAV receivers to the ILS is indeed realistic>should you have to do an autoland.>You're right there's no course selector for NAV2. But why>would you want one? With all the fancy FMC equipment you have>many other means of following/intercepting radials, FIX page>and course intercept on the LEGS page come to mind.>>Regards,>MarkusHey your right , this is a great plane with tons of flexibility, but at times , just as i do when flying in real life I like to be able to tune and rotate the course selector to double check position ,or an intersection / fix.. Thanks for the prompt reply,, P

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